有关ExtensionAttribute奇怪的警告 [英] strange warning about ExtensionAttribute
问题描述
我得到一个奇怪的警告:
I'm getting a strange warning:
预定义类型'System.Runtime.CompilerServices.ExtensionAttribute在多个组件定义在全球别名;使用定义由C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Core.dll
The predefined type 'System.Runtime.CompilerServices.ExtensionAttribute' is defined in multiple assemblies in the global alias; using definition from 'c:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Core.dll'
有没有行号给出,所以很难搞清楚什么是对的。
There is no line number given, so it's hard to figure out what it's on about.
编译器错误代码是 CS1685
推荐答案
是否使用的是已经实现了这个属性(完全相同的名称)某人的DLL(或自己)本身采用预NET 3.5的运行时的一些C#3.0的功能的一种手段? (惯常的伎俩)
Are you using someone's dll (or your own) which had implemented this attribute (with exactly the same name) itself as a means of using some c# 3.0 features on pre .Net 3.5 runtimes? (A common trick)
这是可能的原因。由于它使用的是正确的(MS一个在GAC中),这是不是你虽然应该追捕其他并删除它的问题。
This is the probable cause. Since it is using the correct one (the MS one in the GAC) this is not a problem though you should hunt down the other and remove it.
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